#include <stdio.h>
#include <stdlib.h>
#include <string.h>

char *test()
{
    char *i = malloc(sizeof(char) * 100);
    return i;
}
int main()
{
    char *p = test();
    strcpy(p, "hello");

    printf("%s\n", p);
    free(p);

    return 0;
}

